Lethe
Lethe (lē"the o lēth) , noun
[See Lethal.]
Death. [Obsolete] — Shakespeare
Lethe (lē"the) , noun
[Latin, from Greek lh`qh, prop., forgetfulness; akin to lanqa`nesqai to forget, lanqa`nein to escape notice.]
1.
(Class. Mythology) A river of Hades whose waters when drunk caused forgetfulness of the past.
2.
Oblivion; a draught of oblivion; forgetfulness.